| receive signal | 0.68 |
| relay position data | 0.36 |
| use the nmea 0183 proto… | 0.36 |
| use the information | 0.25 |
| calculate the distance | 0.25 |
| decode signal | 0.25 |
| calculate location of t… | 0.25 |
| detailed mapping | 0.31 |
| computer | 0.25 |
| tuned to frequency | 0.41 |
| provided with approxima… | 0.25 |
| composed of antenna | 0.25 |